android - cameras.isEmpty null flutter

Question

当我使用示例时，任何人都可以指出我的错误 for camera Flutter错误是

NoSuchMethodError: The getter 'isEmpty' was called on null.Receiver : nullTried calling: isEmpty

我已经实现了android和ios的权限

Answer 1

我使用库 image_picker: ^0.4.12 并且我实现了

_getImage(context, ImageSource.camera

onTap，这是神奇的代码

void _getImage(BuildContext context, ImageSource source){
ImagePicker.pickImage(source: source, maxWidth: 400.0).then((File image){
  setState(() {
    _imageFile = image;
  });
  Navigator.pop(context);
});
}

瞧!

谢谢 udemy :)